Swift:向上滑动时出错 [英] Swift : Error when swiping up

问题描述

当我尝试向上滑动手势时，我不断遇到这些错误. 将正确"刷到没问题，但是向上"表示会抛出错误.

I kept on getting these errors when I try do a swipe up gesture. Swiping "right" is alright but "up" would throw errors.

任何帮助都会很棒.

谢谢.

2015-12-24 14:53:36.977轻扫&摇动[58213:9895793]-[刷卡___ Shake.ViewController扫过]:无法识别的选择器已发送到实例0x7fc549ea4400

2015-12-24 14:53:36.977 Swipes & Shake[58213:9895793] -[Swipes___Shake.ViewController swiped]: unrecognized selector sent to instance 0x7fc549ea4400

2015-12-24 14:53:36.982轻扫& Shake [58213:9895793] ***由于未捕获的异常'NSInvalidArgumentException'而终止应用程序，原因:'-[Swipes ___ Shake.ViewController swiped]:无法识别的选择器已发送至实例0x7fc549ea4400'

2015-12-24 14:53:36.982 Swipes & Shake[58213:9895793] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[Swipes___Shake.ViewController swiped]: unrecognized selector sent to instance 0x7fc549ea4400'

libc ++ abi.dylib:以类型为NSException的未捕获异常终止 (lldb)

libc++abi.dylib: terminating with uncaught exception of type NSException (lldb)

import UIKit

class ViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()
    var swipeRight = UISwipeGestureRecognizer(target: self, action: "swiped:")
    swipeRight.direction = UISwipeGestureRecognizerDirection.Right
    self.view.addGestureRecognizer(swipeRight)
    
    var swipeUp = UISwipeGestureRecognizer(target: self, action: "swiped")
    swipeUp.direction = UISwipeGestureRecognizerDirection.Up
    self.view.addGestureRecognizer(swipeUp)
    }

func swiped(gesture: UIGestureRecognizer)
{
    if let swipeGesture =  gesture as? UISwipeGestureRecognizer
    {
        switch swipeGesture.direction
        {
        case UISwipeGestureRecognizerDirection.Right:
            print("RIGHT")
        case UISwipeGestureRecognizerDirection.Up:
            print("UP")
        default:
            break
        }
    }
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


}

推荐答案

您在var swipeUp = UISwipeGestureRecognizer(target: self, action: "swiped")

正确是var swipeUp = UISwipeGestureRecognizer(target: self, action: "swiped:")

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